1Calculate the absolute refractive index for
material X, if the velocity of light in material X is 2.1 x 108 ms-1.
(1.43)

2A ray of light in air is incident at an
angle of 37o on the surface of the same material X used in Q.1.Determine the angle of refraction in material X.(24.9o)

3A ray of light passes from kerosene to
glass.The angle of incidence of
the light is 40.2o and the relative refractive index from kerosene to
glass is 1.08.Calculate the angle
of refraction in the glass.(36.7o)

4Using relevant information from Q.3,
calculate the absolute index of refraction of kerosene if the absolute index of
refraction of glass is 1.5.(1.39)

5The speed of sound in air is 340 m/s.A sound wave refracts on passing from air into an unknown medium and the
wavelength of the sound changes from 0.02 m in air to 0.03 m in the unknown
medium.Calculate the speed of the
sound wave in the unknown medium.(510
m/s)

6A ray of light passes from air into a glass
prism at an angle of incidence of 39o.If the angle of refraction in the glass is 23.7o, what is the
speed of the light in the glass?(1.92
x 108 ms-1)

7The absolute refractive index of glass is
3/2 and that of water is 4/3.Find
the relative refractive index for light traveling from water to glass.(9/8)

8The critical angle for diamond is 24o.Determine the refractive index of diamond.(2.46)

9A particular kind of glass has a refractive
index of 1.46.Calculate its
critical angle.(43.2o)Find the subsequent path of rays of light incident internally on the
surface of the glass at an angle of incidence of 70o.

10.A ray of light strikes the boundary between kerosene of absolute
refractive index 1.39 and glass of absolute refractive index 1.51.A diagram of the situation is shown below.

(a)Determine the relative refractive index for light passing from
kerosene into
glass.(1.09).

(b)If the angle of incidence of the ray is 33o, calculate the
angle of refraction.(30o)

(c)The speed of the light in the glass is 1.99 x 108 ms-1,
find the speed of light in the kerosene.(2.17
x 108 m/s)

(d)Given that the frequency of the light in the glass is 4.7 x 1014
Hz, find the wavelength of the light in the glass.(4.23 x 10-7 m)